Dry cement conveyer



A Feb 10, 1942- P. H. KUEVER, JR 2,272,564

DRY CEMENT CONVEYER Filed Jan. 28, 1941 INVENTOR www Patented Feb. 10, 1942 UNITED STATE 2,212,564 DRY CEMENT couvrir-ima j Paul AH. Kuever, Jr., Ada,

'twenty-five per cent to p Louis, Mo., and twenty-five per?T cent to F. Blaine Rhoades, Fort Smith, Ark. i

Applicationoanuary 2s, 1941, serial 10,376,387

6 claims.- (01.302-4'1) The invention relates to cement conveyers andA has for its object to provide a device of this kind wherein cement particles from a hopper are projected against a disintegrating plate by an airI nozzle in the discharge end of the hopper for breaking large particles of cement and clouding the small particles and broken particles, in air suspension into a blast of air for maintaining the particles in suspension and forcing the same through a conduit, preferably leading to a storage silo.

A further object is to provide a conveyer device particularly adapted for conveying, by means of a blast of air, cement particles and during this operation breaking up larger particles of cement and directing the same into the blast of air.

A further object' is to provide means whereby the hopper nozzle can be adjusted in the disv charge end of the hopper for varying the amount of vacuum in said discharge end, which vacuum sucks material from the hopper in which the material is agitated.

A further object is to provide a detachable nozzle on the hopper discharge end, and to provide means whereby access may be readily had to the nozzle for removal and replacement pure poses.

A further object is to provide the breaking up and suspension casing with a plurality of nozzles extending therein below the-hopper nozzle and to mount said nozzles on a removable plate so they can be easily placed in position or removed therefrom.

A further object is to provide a ilexible connection between the adjustable hopper nozzle and the high pressure line leading to the multiple nozzles so that the hopper nozzle can be adjusted without disturbing the multiple nozzles.

A further object is to converge downwardly opposite sides of the suspension casing so the downwardly deflected particles from the hopper nozzle will come within the zone of high pressure air from the multiple nozzles for the Vst ispens'ion and lifting operation.

A further object is to provide an agitator within the hopper for agitating the material and forcing the samethrough the hopperspout towards the hopper nozzle. where it is rapidly entrained and projected by vacuum in the hopper nozzle, thereby preventing packing of the hopper spout. A

With the aboveand other objects in View the invention resides in the rangement of parts as hereinafter set forth, shown in the drawing, described and claimed, it-

combination and ar- I Okla. Mrs. E. ,Mr Kuever, St.

being understood that changes in the precise embodiment ofA the invention may be made within the scope of whatis claimed without departing from the spirit o the invention. In the drawing: Figure .1 kis a vertical longitudinal sectional view through' the conveyer.

`Figure 2 is' a vertical transverse sectional view taken on line 2-2 of Figure 1.

Figure 3 is aside elevation of the conveyer and a storage silo.

Referring to the drawing, the numeral I designates a conventional form of storage silo into which the crushed and pulverized cement is discharged through an upwardly extending conduit 2', connected at 3 to the upper end of the silo. 'The conduit 2 is preferably secured to the silo by means of braces 4. Although a conventional form of silo is shown, it is obvious the powdered cement is discharged at any suitable point for settling purposes.

Crushed and pulverized cement is discharged into a hopper 5 where it is continuously agitated by a slow moving agitator vided with an annular flange I0, to which is connected by means of a threaded coupling IIa horizontally disposed nozzle I2, which nozzle iS in alinement with a downwardly and inwardlyl inclined deecting wall I3 which deects the particles towards the discharge opening I4 of the casing, to which discharge opening is connected the lower end of the conduit 2. The upper side of the casing 9 is provided with a removable inspection plate I5 which allows ready access to the chamber of the casing replacing nozzles I2 which become worn; Extending horizontally and axially into tlie nozzle I2 is an air supply nozzle I6, through which high v air pressure passes from a supply pipe I'I. As the air leaves the air nozzle I6 a vacuum ,is created within the nozzle I2, which quickly and' rapidly sucks particles from the throat4 1, thereby preventing material being packed in the throat and this discharged material is projected against l alinement with the discharge opening I4, there- 6. The agitator l6 also forces the crushed and pulverized cement down' 3, and particularly for 2 2,272,564 fore it will be seen that the cement particlesI which-are in suspension are forced upwardly through the conduit 2 with the assistance of the air blast from the-nozzles I9, and maintained in suspension until they are discharged into the upper end of the silo I.

The nozzles I 9 Vare carried by a.J nozzle head 2U, and the nozzles extend through a plate 2| interposed between the nozzle head 20 ofv the high pressure air supply line I1 and the rear wall of the casing 9, and is secured in place by means of bolts 2|. By removing the bolts it will be seen that the nozzle plate can be easily removed for repair or replacement purposes, and this action is facilitated by the exible hose connection 22 Vbetween the pipe I'I and the rear end of the nozzle I6.

The nozzle I6 extends rearwardly through a packing gland 23 and through asupporting bracket 24, and threaded on the nozzle I6 at y,opposite sides of the bracket 24 are lock nuts 25 for holding the nozzle I6 in adjusted position.

By adjusting the nozzle I6 within the nozzle I2, it will be seen that the amount of vacuum cre'- ated for suction purposes in the `nozzle I2 may be varied according to the neness'of'material being lifted. p

The agitator 6 is mounted on a transverse shaft 26 which extends through packing glan'ds 21 bn the outside of the hopper and into bearings 28'of supporting brackets 29. By locating the bearings to the outside of the hopper it will be seen that fine powdered cement will not 'accumulate therein and wear the bearing which is one of the diiiculties know experienced with agitator shafts in hoppers of this kind.

The invention having been set forth what is claimed as new and useful is:

1. A device for conveying material particles in air suspension. said device comprising a hopper, a-chambered casing. a discharge spout carried by the hopper and extending into the casing chamber, a nozzle carried by the spout and disposed within the casing chamber; a primary the casing. 2. A device as set forth in claim 1 wherein the From the above it will be seen that a convey- Y -ing and liftii'lg device is provided for ne particles of material in air suspension, and the device is simple in construction and operation and particularly adapted for conveying cement particles from a hopper to a storage member; it being understood that the crushed material enters the hopper from any suitable type of crusher.

air nozzle extending into the end of the hopper spout and into the nozzle carried thereby, a downwardly and outwardly extending deiiecting wall carried by the casing opposite the hopper spout nozzle, the outer end of said casing having a discharge opening, and a secondary air supply pipe terminating in multiple jet nozzles within air supply nozzle is axially adjustable within the hop er spout nozzle.

3: A device as set forth in claim 1 wherein'the air supply nozzle is axially adjustable within the hopper spout nozzle and..a flexible connection between the air supply nozzle and the air supply pipe leading to the nozzle below the hopper spout nozzle.

4. 4A device as set forth in claim 1 including a removable inspection plate carried by the upper side of the casing adjacent the hopper spout nozzle.

5. A device as set'forth in claim 1 including a removable inspection plate carried by the casing adjacent` the hopper spout nozzle, said hopper spout nozzle being detachably mounted.

6. A device as set forth in claim 1 wherein the nozzle carried by the casing below the hopper spout nozzle comprises a plurality of tubular air supply pipe and the casing and a ilexible connection between the air supply pipe and the l air nozzle and forming means whereby the air tube plate may be easily removed.

PAUL H. KUEVER, Jn. 

